Hall Effect speed sensor ic, Magnetic speed, proximity switching, Magnetic speed

 The Infineon well-established and robust Hall technology enables accurate and highly linear measurement of currents with a full measurement range up to ±120A. All negative effects (saturation, hysteresis) commonly known from sensors using flux concentration techniques are avoided. 

https://www.futureelectronics.com/npi/infineon-tli4971-current-sensor